[ET Trac] [Einstein Toolkit] #2158: Without MPI installed, Cactus doesn't build

[Einstein Toolkit]

#2158: Without MPI installed, Cactus doesn't build
-------------------------------+---------------------------------
  Reporter:  Steven R. Brandt  |      Owner:  (none)
      Type:  defect            |     Status:  review
  Priority:  unset             |  Milestone:
 Component:  Other             |    Version:  development version
Resolution:                    |   Keywords:
-------------------------------+---------------------------------

Comment (by Roland Haas):

 I see. This seems somewhat ugly, since we have to look for "magic"
 directory names. It seems workable but is required everywhere else where
 we may refer to {{{XXX_DIR}}}.

 I would also try to improve hwloc's {{{HWLOC_DIR}}} setting logic? Ie.
 {{{
 HWLOC_DIR="$(echo ${HWLOC_INC_DIRS} NO_BUILD | sed 's!/[^/]* *!!')"
 }}}
 seems a bit strange to me. I kind of understand what it wants to do,
 namely use {{{HWLOC_INC_DIRS}}} then remove the last part of the path
 (presumably "include") from the first one found, or use {{{NO_BUILD}}} if
 {{{HWLOC_INC_DIRS}}} is empty. Would it make sense to try and return only
 a single word in {{{HWLOC_INC_DIRS}}}? Right now it may be "/home/sw/
 NO_BUILD".

 I would try for the output of
 {{{
 pkg-config hwloc --variable=prefix
 }}}
 as well. This is not foolproof as the variable does not have to exist.

-- 
Ticket URL: <https://trac.einsteintoolkit.org/ticket/2158#comment:5>
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